./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0eb0a93133a0d165b4e13ef7269be4b8c3f0f81976a167102da919b09b6c6616 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:41:28,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:41:28,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:41:28,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:41:28,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:41:28,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:41:28,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:41:28,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:41:28,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:41:28,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:41:28,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:41:28,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:41:28,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:41:28,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:41:28,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:41:28,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:41:28,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:41:28,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:41:28,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:41:28,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:41:28,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:41:28,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:41:28,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:41:28,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:41:28,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:41:28,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:41:28,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:41:28,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:41:28,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:41:28,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:41:28,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:41:28,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:41:28,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:41:28,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:41:28,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:41:28,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:41:28,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:41:28,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:41:28,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:41:28,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:41:28,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:41:28,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:41:28,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:41:28,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:41:28,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:41:28,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:41:28,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:41:28,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:41:28,516 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:41:28,516 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:41:28,517 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:41:28,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:41:28,517 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:41:28,517 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:41:28,518 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:41:28,518 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:41:28,518 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:41:28,518 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:41:28,519 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:41:28,519 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:41:28,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:41:28,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:41:28,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:41:28,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:41:28,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:41:28,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:41:28,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:41:28,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:41:28,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:41:28,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:41:28,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:41:28,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:41:28,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:41:28,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:41:28,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:41:28,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:41:28,529 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:41:28,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:41:28,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:41:28,531 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:41:28,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:41:28,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:41:28,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:41:28,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eb0a93133a0d165b4e13ef7269be4b8c3f0f81976a167102da919b09b6c6616 [2022-10-17 17:41:28,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:41:28,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:41:28,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:41:28,894 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:41:28,895 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:41:28,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/product-lines/email_spec3_product19.cil.c [2022-10-17 17:41:28,972 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/data/3420da2f2/08212a57ef18424caa679ed54a9e9087/FLAGe3e1ba134 [2022-10-17 17:41:29,639 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:41:29,640 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/sv-benchmarks/c/product-lines/email_spec3_product19.cil.c [2022-10-17 17:41:29,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/data/3420da2f2/08212a57ef18424caa679ed54a9e9087/FLAGe3e1ba134 [2022-10-17 17:41:29,818 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/data/3420da2f2/08212a57ef18424caa679ed54a9e9087 [2022-10-17 17:41:29,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:41:29,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:41:29,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:41:29,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:41:29,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:41:29,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:41:29" (1/1) ... [2022-10-17 17:41:29,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2356cd59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:29, skipping insertion in model container [2022-10-17 17:41:29,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:41:29" (1/1) ... [2022-10-17 17:41:29,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:41:29,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:41:30,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/sv-benchmarks/c/product-lines/email_spec3_product19.cil.c[8336,8349] [2022-10-17 17:41:30,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:41:30,629 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:41:30,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/sv-benchmarks/c/product-lines/email_spec3_product19.cil.c[8336,8349] [2022-10-17 17:41:30,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:41:30,804 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:41:30,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30 WrapperNode [2022-10-17 17:41:30,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:41:30,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:41:30,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:41:30,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:41:30,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:30,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:30,928 INFO L138 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 970 [2022-10-17 17:41:30,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:41:30,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:41:30,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:41:30,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:41:30,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:30,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:30,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:30,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:31,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:31,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:31,041 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:31,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:31,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:41:31,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:41:31,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:41:31,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:41:31,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (1/1) ... [2022-10-17 17:41:31,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:41:31,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:31,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:41:31,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 17:41:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 17:41:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 17:41:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 17:41:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 17:41:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 17:41:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 17:41:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 17:41:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 17:41:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 17:41:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 17:41:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 17:41:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 17:41:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 17:41:31,179 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 17:41:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 17:41:31,179 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 17:41:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:41:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 17:41:31,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 17:41:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-10-17 17:41:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-10-17 17:41:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 17:41:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 17:41:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-10-17 17:41:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-10-17 17:41:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 17:41:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 17:41:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 17:41:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 17:41:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-10-17 17:41:31,181 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-10-17 17:41:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 17:41:31,182 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 17:41:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 17:41:31,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 17:41:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 17:41:31,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 17:41:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:41:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 17:41:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 17:41:31,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:41:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:41:31,438 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:41:31,441 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:41:32,547 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:41:33,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:41:33,035 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:41:33,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:41:33 BoogieIcfgContainer [2022-10-17 17:41:33,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:41:33,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:41:33,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:41:33,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:41:33,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:41:29" (1/3) ... [2022-10-17 17:41:33,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4956ce42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:41:33, skipping insertion in model container [2022-10-17 17:41:33,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:41:30" (2/3) ... [2022-10-17 17:41:33,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4956ce42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:41:33, skipping insertion in model container [2022-10-17 17:41:33,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:41:33" (3/3) ... [2022-10-17 17:41:33,049 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product19.cil.c [2022-10-17 17:41:33,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:41:33,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:41:33,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:41:33,144 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3fdc516, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:41:33,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:41:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 100 states have (on average 1.34) internal successors, (134), 104 states have internal predecessors, (134), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-10-17 17:41:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 17:41:33,165 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:33,166 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:33,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:33,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2052598989, now seen corresponding path program 1 times [2022-10-17 17:41:33,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:33,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464796924] [2022-10-17 17:41:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:33,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:41:33,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:33,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464796924] [2022-10-17 17:41:33,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464796924] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:33,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:33,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:41:33,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297963546] [2022-10-17 17:41:33,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:33,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:41:33,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:33,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:41:33,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:41:33,634 INFO L87 Difference]: Start difference. First operand has 171 states, 100 states have (on average 1.34) internal successors, (134), 104 states have internal predecessors, (134), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:41:33,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:33,792 INFO L93 Difference]: Finished difference Result 258 states and 346 transitions. [2022-10-17 17:41:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:41:33,795 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 63 [2022-10-17 17:41:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:33,811 INFO L225 Difference]: With dead ends: 258 [2022-10-17 17:41:33,811 INFO L226 Difference]: Without dead ends: 167 [2022-10-17 17:41:33,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:41:33,828 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:33,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:41:33,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-10-17 17:41:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-10-17 17:41:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 100 states have internal predecessors, (128), 50 states have call successors, (50), 19 states have call predecessors, (50), 18 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-10-17 17:41:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2022-10-17 17:41:33,926 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 63 [2022-10-17 17:41:33,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:33,929 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2022-10-17 17:41:33,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:41:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2022-10-17 17:41:33,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 17:41:33,941 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:33,941 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:33,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:41:33,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1329904997, now seen corresponding path program 1 times [2022-10-17 17:41:33,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:33,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612816887] [2022-10-17 17:41:33,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:33,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:41:34,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:34,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612816887] [2022-10-17 17:41:34,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612816887] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:34,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:34,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:34,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236581113] [2022-10-17 17:41:34,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:34,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:34,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:34,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:34,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:34,368 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:41:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:34,537 INFO L93 Difference]: Finished difference Result 253 states and 330 transitions. [2022-10-17 17:41:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:41:34,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2022-10-17 17:41:34,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:34,541 INFO L225 Difference]: With dead ends: 253 [2022-10-17 17:41:34,543 INFO L226 Difference]: Without dead ends: 169 [2022-10-17 17:41:34,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:34,547 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:34,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 389 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:41:34,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-10-17 17:41:34,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-10-17 17:41:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 100 states have (on average 1.3) internal successors, (130), 102 states have internal predecessors, (130), 50 states have call successors, (50), 19 states have call predecessors, (50), 18 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-10-17 17:41:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 227 transitions. [2022-10-17 17:41:34,584 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 227 transitions. Word has length 64 [2022-10-17 17:41:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:34,586 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 227 transitions. [2022-10-17 17:41:34,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:41:34,587 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 227 transitions. [2022-10-17 17:41:34,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-17 17:41:34,601 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:34,602 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:34,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:41:34,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash 880921081, now seen corresponding path program 1 times [2022-10-17 17:41:34,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:34,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696788371] [2022-10-17 17:41:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:34,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:41:34,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:34,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696788371] [2022-10-17 17:41:34,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696788371] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:34,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:34,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:34,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768876583] [2022-10-17 17:41:34,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:34,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:34,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:34,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:34,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:34,819 INFO L87 Difference]: Start difference. First operand 169 states and 227 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:41:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:34,958 INFO L93 Difference]: Finished difference Result 368 states and 513 transitions. [2022-10-17 17:41:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:41:34,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 69 [2022-10-17 17:41:34,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:34,967 INFO L225 Difference]: With dead ends: 368 [2022-10-17 17:41:34,967 INFO L226 Difference]: Without dead ends: 217 [2022-10-17 17:41:34,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:34,969 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 57 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:34,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 401 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:41:34,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-10-17 17:41:35,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 212. [2022-10-17 17:41:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 134 states have internal predecessors, (183), 61 states have call successors, (61), 19 states have call predecessors, (61), 18 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-10-17 17:41:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 302 transitions. [2022-10-17 17:41:35,013 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 302 transitions. Word has length 69 [2022-10-17 17:41:35,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:35,014 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 302 transitions. [2022-10-17 17:41:35,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:41:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 302 transitions. [2022-10-17 17:41:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-17 17:41:35,017 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:35,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:35,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:41:35,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1826954329, now seen corresponding path program 1 times [2022-10-17 17:41:35,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:35,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416009366] [2022-10-17 17:41:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:35,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:41:35,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:35,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416009366] [2022-10-17 17:41:35,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416009366] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:35,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752496909] [2022-10-17 17:41:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:35,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:35,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:35,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:35,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d1343d-d1c9-499c-bb9b-b32b05406177/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:41:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:35,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:41:35,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:41:35,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:41:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 17:41:35,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752496909] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:41:35,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626617603] [2022-10-17 17:41:35,923 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-10-17 17:41:35,923 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:35,929 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:35,938 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:35,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs